package com.ssm.sample.interceptor.shiro;

import org.apache.shiro.authc.AuthenticationException;
import org.apache.shiro.authc.AuthenticationInfo;
import org.apache.shiro.authc.AuthenticationToken;
import org.apache.shiro.authc.SimpleAuthenticationInfo;
import org.apache.shiro.authz.AuthorizationInfo;
import org.apache.shiro.realm.AuthorizingRealm;
import org.apache.shiro.subject.PrincipalCollection;

/**
 */
public class ShiroRealm extends AuthorizingRealm {

	/**
	 * 登录信息和用户验证信息验证(non-Javadoc)
	 * 
	 * @see org.apache.shiro.realm.AuthenticatingRealm#doGetAuthenticationInfo
	 *      (org.apache.shiro.authc.AuthenticationToken)
	 */
	@Override
	protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken token) throws AuthenticationException {

		String username = (String) token.getPrincipal(); // 得到用户名
		String password = new String((char[]) token.getCredentials()); // 得到密码

		if (null != username && null != password) {
			return new SimpleAuthenticationInfo(username, password, getName());
		} else {
			return null;
		}
	}

	/**
	 * 授权查询回调函数, 进行鉴权但缓存中无用户的授权信息时调用, 负责在应用程序中决定用户的访问控制的方法(non-Javadoc)
	 * 
	 * @see org.apache.shiro.realm.AuthorizingRealm#doGetAuthorizationInfo(org.apache.shiro.subject.PrincipalCollection)
	 */
	@Override
	protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection pc) {
		System.out.println("========2");
		return null;
	}
}
